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WO2012007977A1 - Évaporateur statique amélioré comprenant des étagères d'évaporation - Google Patents

Évaporateur statique amélioré comprenant des étagères d'évaporation Download PDF

Info

Publication number
WO2012007977A1
WO2012007977A1 PCT/IT2011/000239 IT2011000239W WO2012007977A1 WO 2012007977 A1 WO2012007977 A1 WO 2012007977A1 IT 2011000239 W IT2011000239 W IT 2011000239W WO 2012007977 A1 WO2012007977 A1 WO 2012007977A1
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator
shelves
refrigerating apparatus
evaporating
static evaporator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IT2011/000239
Other languages
English (en)
Inventor
Claudio Fossati
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MONDIAL GROUP Srl
Original Assignee
MONDIAL GROUP Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MONDIAL GROUP Srl filed Critical MONDIAL GROUP Srl
Publication of WO2012007977A1 publication Critical patent/WO2012007977A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • F25D25/028—Cooled supporting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel

Definitions

  • the present invention referes to an improved static evaporator with evaporating shelves.
  • such known evaporators are composed of a tube, normally made of iron, aluminium, copper or alloys thereof, whose external diameter is usually equal to 8 mm with a wall of 0.75 mm, inside which a refrigerating fluid flows, such tube being suitably shaped in order to make the shelf on which goods must be placed.
  • a tube normally made of iron, aluminium, copper or alloys thereof, whose external diameter is usually equal to 8 mm with a wall of 0.75 mm, inside which a refrigerating fluid flows, such tube being suitably shaped in order to make the shelf on which goods must be placed.
  • welded wires suitably cut and bent aluminium sheets or plastic or metallic profiles and/or manufactured items .
  • a known evaporator therefore appears as a set of evaporating shelves, mutually connected, supplied as input by an expansion valve of the vapour compression cycle, normally a capillary tube with an inside diameter between 0.6 and 1.5 mm depending on the necessary mass flow-rate.
  • the capillary tube in turn is supplied by the liquid line, namely the terminal condenser section.
  • the evaporator output is then connected to the suction pipe that leads overheated dry vapours to the compressor.
  • the suction pipe and the capillary tube in order to ensure the coolant overheating to prevent the compressor from sucking liquid, are mutually in contact as counter-current, forming the suction line.
  • the brine-catching device In addition to shelves and suction line, another major component is the brine-catching device: the brine-catching device, usually shaped as one or more shelves, is placed above the first shelf useful for depositing goods starting from the top .
  • This element given its position, firstly cools the hot humid air entering the apparatus following the door opening and, for such reason, is subjected to a greater deposit of ice with respect to the other shelves.
  • object of the present invention is solving the above prior art problems by providing an improved static evaporator with evaporating shelves separated into two parts in order to proportionally reduce the pressure drop by using a single compressor and a single condenser.
  • Figure 1 shows a front and schematic view of a preferred embodiment of the improved static evaporator with evaporating shelves according to the present invention
  • Figure 2 shows a sectional view along line B-B of the static evaporator with evaporating shelves of Figure 1;
  • Figure 3 shows a sectional view along line E-E of the static evaporator with evaporating shelves of Figure 1;
  • Figure 4 shows a sectional view along line A-A of the static evaporator with evaporating shelves of Figure 1.
  • the improved static evaporator 1 of a refrigerating apparatus with evaporating shelves 2a, 2b comprises a double supply composed of at least one first and one second circuit, respectively 3a, 3b, of a refrigerating fluid suitably supplied by a single compressor 4 and cooperating with a single condenser depending on their specific thermal load and according to the prior art teachings.
  • such two circuits 3a, 3b of the evaporator 1 are symmetrical: such two circuits 3a, 3b are therefore characterised by having the same lengths and thermal working conditions: in order to obtain such equal thermal working conditions, it is necessary to take into account that the evaporating shelves 2a and 2b, respectively obtained from such suitably shaped first circuit 3a and second circuit 3b, are in an air temperatures range with such a thermal gradient that temperatures decrease from top to bottom.
  • the brine- catching device 5 is composed of an equal number of shelves 7 due to its functional specificity, and the number of shelves 2a, 2b for goods in deposit is equal.
  • an odd number of shelves 7 composing the brine-catching device 5 can be provided, keeping the process of interlacing the shelves 7 between the circuits 3a, 3b, at the cost of a higher degree of asymmetry and taking into account 1 000239 the global circuit lengths.
  • each one of the two circuits 3a, 3b of the evaporator 1 is supplied by such compressor 4 by interposing a respective capillary 9a, 9b with the same flow-rate (about half of the flow-rate used for a single circuit, to be optimised) , both in contact with the suction pipe, in order to form the suction line, preferably connected, at the end of the evaporator 1, with a single accumulator that therefore will have one input and two outputs of the coolant side.
  • the evaporator 1 as previously described therefore allows obtaining a smaller pressure drop and, with the same evaporation temperature of the compressor 4 (suction pressure) , obtaining a lower temperature in the most critical section for the performance of the apparatus composed of the brine-catching device 5, such critical points being the relationship between the temperature of the brine-catching device 5 and the temperature of the hottest goods, that from experience is assumed being the one placed on the first shelf.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Removal Of Water From Condensation And Defrosting (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

La présente invention concerne un évaporateur statique (1) avec des étagères d'évaporation (2a, 2b) d'un appareil de réfrigération, qui comprend une double alimentation constituée d'au moins un premier et un deuxième circuit (3a, 3b) d'un fluide de réfrigération. Chaque circuit est formé de manière à créer une étagère respective (2a, 2b), alimentée par un compresseur unique (4), et ces deux circuits (3a, 3b) sont symétriques et ont la même longueur et présentent les mêmes conditions de fonctionnement thermique.
PCT/IT2011/000239 2010-07-15 2011-07-11 Évaporateur statique amélioré comprenant des étagères d'évaporation Ceased WO2012007977A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2010A000614A IT1404029B1 (it) 2010-07-15 2010-07-15 Evaporatore statico a ripiani evaporanti perfezionato.
ITTO2010A000614 2010-07-15

Publications (1)

Publication Number Publication Date
WO2012007977A1 true WO2012007977A1 (fr) 2012-01-19

Family

ID=43530931

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2011/000239 Ceased WO2012007977A1 (fr) 2010-07-15 2011-07-11 Évaporateur statique amélioré comprenant des étagères d'évaporation

Country Status (2)

Country Link
IT (1) IT1404029B1 (fr)
WO (1) WO2012007977A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103398511A (zh) * 2013-08-22 2013-11-20 合肥美的电冰箱有限公司 用于冰箱冷冻室的丝管蒸发器及具有其的冰箱

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3305764A1 (de) * 1983-02-19 1984-08-23 R. & G. Schmöle Metallwerke GmbH & Co KG, 5750 Menden Verdampfer fuer gefrierschraenke
WO2005114065A1 (fr) * 2004-05-17 2005-12-01 BSH Bosch und Siemens Hausgeräte GmbH Appareil de refrigeration et evaporateur pour ledit appareil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3305764A1 (de) * 1983-02-19 1984-08-23 R. & G. Schmöle Metallwerke GmbH & Co KG, 5750 Menden Verdampfer fuer gefrierschraenke
WO2005114065A1 (fr) * 2004-05-17 2005-12-01 BSH Bosch und Siemens Hausgeräte GmbH Appareil de refrigeration et evaporateur pour ledit appareil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103398511A (zh) * 2013-08-22 2013-11-20 合肥美的电冰箱有限公司 用于冰箱冷冻室的丝管蒸发器及具有其的冰箱

Also Published As

Publication number Publication date
ITTO20100614A1 (it) 2010-10-14
IT1404029B1 (it) 2013-11-08

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